I thank you! My faulty memory told me it was more than a line change in 
weewx.conf. Simple and it worked.
Thanks again

On Sunday, December 20, 2020 at 9:10:40 AM UTC-6 [email protected] wrote:

> I remember that discussion, but can't find it either.
>
> The Vantage stations do their own record generation. For whatever reasons, 
> they put out windDir in discrete 22.5° intervals. So, that's what you get 
> with the default hardware record generation 
> <http://www.weewx.com/docs/usersguide.htm#record_generation>.
>
> If you want WeeWX to calculate the archive  records, set 
> record_generation=software. Then you will get the vector averaged direction.
>
> -tk
>
> On Sun, Dec 20, 2020 at 6:34 AM [email protected] <[email protected]> wrote:
>
>> I recently updated Weewx from ver 3.7.1 to 4.2.0 on a PI 2.   After 
>> nearly 3 years running continuously it was time to get a new SD card going. 
>> The 3.7.1 update was from a earlier version 3 or later version 2 system. 
>> Hardware - Davis Vantage 2 with USB datalogger and USB connection to the 
>> PI. All code and drivers are straight out of the box from Debian/Raspbian 
>> installation.
>> Back after the upgrade to 3.7.1 was made, all windDir outputs to charts 
>> and reporting to sites (CWOP, Wunderground on 5 minute intervals) were in 
>> discrete 22 degree increments.  Back then, after searching the forums, a 
>> fix had been posted to get the average wind direction over the reporting 
>> interval rather than the discrete values. As I recall it was a simple 
>> change to a couple of code lines. Naturally, I didn't record the fix 
>> anywhere.  After trying all the same searches on windDir, degrees, ordinals 
>> etc, I can't fix the fix so I can apply it to the 4.2.0 version.
>> I would appreciate any help. I don't want to revert to my Weewx 3.7.1 
>> imaged card for multiple reasons.
>> Thanks in advance!
>>
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